The Trachtenberg Speed System of Basic Mathematics
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The Trachtenberg Speed System of Basic Mathematics
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The Trachtenberg Speed System of Basic Mathematics
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Book Details
- Publisher
- Hachette
- Format
- Paperback
- Condition
- New
- ISBN-13
- 9780285629165
- ISBN-10
- 0285629166
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ISBN: 0285629166
Author: Souvenir Press
The complete system of the Trachtenberg method of mathematics which makes possible high-speed arithmetical calculations with a remarkable degree of accuracy. This method is not only speedy but simple. Once one has mastered the rules, lightning calculation is as easy as reading a story. It looks like magic, but the rules are based on sound logic.
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The Trachtenberg Speed System of Basic Mathematics
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